CN103139603A - Transmission method for push type video on demand programs and associated decoder - Google Patents
Transmission method for push type video on demand programs and associated decoder Download PDFInfo
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- CN103139603A CN103139603A CN2012100470012A CN201210047001A CN103139603A CN 103139603 A CN103139603 A CN 103139603A CN 2012100470012 A CN2012100470012 A CN 2012100470012A CN 201210047001 A CN201210047001 A CN 201210047001A CN 103139603 A CN103139603 A CN 103139603A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/80—Generation or processing of content or additional data by content creator independently of the distribution process; Content per se
- H04N21/83—Generation or processing of protective or descriptive data associated with content; Content structuring
- H04N21/84—Generation or processing of descriptive data, e.g. content descriptors
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/20—Servers specifically adapted for the distribution of content, e.g. VOD servers; Operations thereof
- H04N21/23—Processing of content or additional data; Elementary server operations; Server middleware
- H04N21/235—Processing of additional data, e.g. scrambling of additional data or processing content descriptors
- H04N21/2353—Processing of additional data, e.g. scrambling of additional data or processing content descriptors specifically adapted to content descriptors, e.g. coding, compressing or processing of metadata
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/20—Servers specifically adapted for the distribution of content, e.g. VOD servers; Operations thereof
- H04N21/25—Management operations performed by the server for facilitating the content distribution or administrating data related to end-users or client devices, e.g. end-user or client device authentication, learning user preferences for recommending movies
- H04N21/262—Content or additional data distribution scheduling, e.g. sending additional data at off-peak times, updating software modules, calculating the carousel transmission frequency, delaying a video stream transmission, generating play-lists
- H04N21/26258—Content or additional data distribution scheduling, e.g. sending additional data at off-peak times, updating software modules, calculating the carousel transmission frequency, delaying a video stream transmission, generating play-lists for generating a list of items to be played back in a given order, e.g. playlist, or scheduling item distribution according to such list
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
- H04N21/45—Management operations performed by the client for facilitating the reception of or the interaction with the content or administrating data related to the end-user or to the client device itself, e.g. learning user preferences for recommending movies, resolving scheduling conflicts
- H04N21/458—Scheduling content for creating a personalised stream, e.g. by combining a locally stored advertisement with an incoming stream; Updating operations, e.g. for OS modules ; time-related management operations
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
- H04N21/47—End-user applications
- H04N21/472—End-user interface for requesting content, additional data or services; End-user interface for interacting with content, e.g. for content reservation or setting reminders, for requesting event notification, for manipulating displayed content
- H04N21/47202—End-user interface for requesting content, additional data or services; End-user interface for interacting with content, e.g. for content reservation or setting reminders, for requesting event notification, for manipulating displayed content for requesting content on demand, e.g. video on demand
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
- H04N21/47—End-user applications
- H04N21/482—End-user interface for program selection
- H04N21/4825—End-user interface for program selection using a list of items to be played back in a given order, e.g. playlists
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/60—Network structure or processes for video distribution between server and client or between remote clients; Control signalling between clients, server and network components; Transmission of management data between server and client, e.g. sending from server to client commands for recording incoming content stream; Communication details between server and client
- H04N21/65—Transmission of management data between client and server
- H04N21/654—Transmission by server directed to the client
- H04N21/6543—Transmission by server directed to the client for forcing some client operations, e.g. recording
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/80—Generation or processing of content or additional data by content creator independently of the distribution process; Content per se
- H04N21/81—Monomedia components thereof
- H04N21/812—Monomedia components thereof involving advertisement data
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/80—Generation or processing of content or additional data by content creator independently of the distribution process; Content per se
- H04N21/83—Generation or processing of protective or descriptive data associated with content; Content structuring
- H04N21/845—Structuring of content, e.g. decomposing content into time segments
- H04N21/8456—Structuring of content, e.g. decomposing content into time segments by decomposing the content in the time domain, e.g. in time segments
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- Signal Processing (AREA)
- Databases & Information Systems (AREA)
- Human Computer Interaction (AREA)
- Library & Information Science (AREA)
- Business, Economics & Management (AREA)
- Marketing (AREA)
- Two-Way Televisions, Distribution Of Moving Picture Or The Like (AREA)
- Television Signal Processing For Recording (AREA)
Abstract
The invention relates to a transmission method for a push type video on demand programs and an associated decoder. The transmission method for VOD "Push" programs comprises the steps of: transmission of a stream containing VOD "Push" programs from a remote server (2) over a broadcasting network (3) to a destination of multiple decoders (4), and storage of program units in the memory by each decoder. The stream contains a first program unit comprising a first audio/video content, a second program unit comprising a second audio/video content, and a third program unit comprising a list containing at least the identifiers of the first and second units, according to which, when the decoder receives a command for playing the third program unit, it proceeds to displaying on the screen successively the first and the second audio/video contents, depending on the data present in a field of metadata of the third program unit.
Description
Technical field
The present invention relates to a kind of transmission method of propelling movement type video frequency request program.
Background technology
There is video request program (the being called hereinafter VoD) service of three types, it is provided at streaming server and is connected between the decoder of TV screen, this decoder receives the video that sends to radio network (for example, hertz radio network) from streaming server.
In live VoD service, user in selecting content, and the user watches this content in user's set-top box when the remote service provider server receives this content.This is " stream " of going to the specific user who has selected this content.The user can select the instruction with Types Below: " time-out ", " stopping ", " retreating ", " from the beginning watching ", " to skip before " etc.Each in these instructions is sent to server, and server is adjusted streamable content in real time according to the instruction that receives.For such VoD, must have the available bandwidth network (it has return path and low-down stand-by period) of non-constant width, in order to high-quality service is provided.
In " pulling VoD " formula service, user in selecting content, buy this content and download selected content to long-range vendor server request.In case decoder has been downloaded this content, this content just can by before visual by decoder stores to local.For such VoD, must have the available bandwidth network with return path, and decoder must have the memory space corresponding with the content of downloading.
In this " propelling movement " formula VoD service, operator is selected content, and via radio network, whole content " propelling movement " is arrived all decoders, and then this content is stored in these decoders.At any time, the user can select a content in these contents and watch this content, if he has the right so to do, for example, if having, he gives its subscription certificate to the access right of selected content, if perhaps he has purchased this content in advance.Can use classical unidirectional broadcast network, and current technology allows decoder to have large storage capacity.
Yet, in current " propelling movement " formula VoD system, the program that is difficult to consider the evolution relevant with the program of having stored in decoder or is difficult to define novel or new construction.
Summary of the invention
For this reason, according to an aspect, the object of the invention is to the transmission method of the above-mentioned type, it comprises the step that meets the following:
-by radio network, the broadcasting stream of propelling movement type video frequency request program unit is sent to a plurality of decoders that can be connected to display screen from remote server, wherein, each program cells comprises the first corresponding element data field that contains element identifier (element ID) at least, and each program cells comprises the second field with audio/video content alternatively
-these program cells are stored in the memory of each decoder;
wherein, described stream comprises the first program cells, second program unit and the 3rd program cells, described the first program cells comprises first module identifier and the first audio/video content, described second program unit comprises second unit identifier and the second audio/video content, described the 3rd program cells comprises the 3rd element identifier (element ID), and described the 3rd program cells also comprises the list that has at least described first module identifier and described second unit identifier in addition, accordingly, when described decoder receives when playing the order of described the 3rd program cells, the data that exist in first metadata fields of described decoder according to described the 3rd program cells, show the second included audio/video content in the first audio/video content that described the first program cells is included and described second program unit on screen.
In these embodiments, also comprise in addition one or several characteristics in following characteristics according to transmission method of the present invention:
The first field of the metadata of-described the 3rd program cells provides at least one parameter value, described at least one parameter value indication:
The described continuous broadcast of-described the first audio/video content and described the second audio/video content is playback cycle or single playback; And/or
Whether-order is random.
In-described list in described the 3rd program cells, at least one corresponding code is associated with described first module identifier, and a corresponding code is associated with described second unit identifier, and each code indication in these codes:
A/ whether ratify that playback skip is crossed or accelerated playback between specific playback mode; And/or
Pressure or the optional attribute of the described unit that b/ is associated with described code; And/or
The specified conditions of skipping and will verifying of the unit that c/ is associated with described code;
The operation that d/ will carry out, different with described Unit the 3rd from described first module, described second unit
The element identifier (element ID) of program cells, and alternatively, the sign of order;
Wherein, when the code indication situation a/ that is associated with a unit in described first module and described second unit, described decoder when playing the audio/video content of this unit according to the value approval of described code or forbid that playback skip is crossed or accelerated playback; And/or
Wherein, when the code indication situation b/ that is associated with a unit in described first module and described second unit, approval or forbid playing another audio/video content in described the first audio/video content and described the second audio/video content when the audio/video content of described decoder in described the first audio/video content and described the second audio/video content is unavailable; And/or
Wherein, when the code indication situation c/ that is associated with unit in described first module and described second unit, described decoder test is determined condition and skip described broadcast when described condition is verified; And/or
Wherein, when the code indication situation d/ that is associated with a unit in described first module and described second unit, described decoder is carried out the operation relevant with another program cells that identifies alternatively under the condition that receives the order that identifies.
-when the code indication situation c/ that is associated with a unit in described first module and described second unit, described definite condition is based on:
The availability of another unit in-described first module and described second unit; And/or
The selection that-described user has made the program cells different with described Unit the 3rd from described first module, described second unit; And/or
The audio/video content of-program cells different with described Unit the 3rd from described first module, described second unit; And/or
-predetermined geographic area list and the comparison of the code in the geographical position of the described decoder of sign.
-described the first program cells comprises still image, the described list of described Unit the 3rd comprises the duration value corresponding with the identifier of described first module, and accordingly, described decoder is arranged in use in the described image of playing during described the 3rd program cells described first module and shows the duration that equates with described value;
-described operation comprises described another program cells that broadcast or firework control identify;
-described stream comprises the 4th program cells, the identifier of the program cells that described the 4th program cells indication is different from described the 4th program cells; And wherein, described decoder uses included metadata in described the 4th program cells to replace metadata in the first field of the different program cells of described and described the 4th program cells owing to receiving described the 4th program cells;
-described stream comprises the firework control order of indicating program cells, and wherein, described decoder is the defined unit of firework control after receiving described order; And/or, wherein, described stream comprises the indication firework control order on definite date, and wherein, the program cells on the date before described definite date of the indication that described decoder firework control is stored;
The first field of the metadata of-described program cells comprises the son field of indication " as seen " or " hiding " characteristic; And wherein, described decoder only for the unit of the son field that comprises indication " as seen " characteristic, shows the information from the first son field in program guide;
-selected that the information relevant with program cells presents on described screen regional the time, described decoder shows audio/video content included in described program cells on described screen;
The first field of the metadata of-described program cells comprises the son field of indicating the firework control date; And described decoder comes the described program cells of firework control according to the corresponding data at described son field indicating.
according to second aspect, the object of the invention is to a kind of decoder, be set to receive " propelling movement " formula video frequency request program and be suitable for being connected to display screen, described decoder comprises memory and is used for receiving from radio network the module of the stream that comprises " propelling movement " formula video frequency request program unit, wherein, each program cells comprises the first corresponding field of the metadata that contains element identifier (element ID) at least, and each program cells comprises the second field that contains the audio/video content alternatively, wherein, described decoder has been set to store described program cells, described decoder is suitable for receiving when playing the order of the 3rd program cells, the data that exist in the first field according to the metadata of described the 3rd program cells, order continuous demonstration on described screen comprises the first program cells, the stream of second program unit and the 3rd program cells, wherein, described the first program cells comprises first module identifier and the first audio/video content, described second program unit comprises second unit identifier and the second audio/video content, described the 3rd program cells comprises the 3rd element identifier (element ID), and described the 3rd program cells also comprises a list in addition, described list comprises the second included audio/video content second unit identifier in the first module identifier of the first audio/video content included in described the first program cells and described second program unit at least.
Description of drawings
By reading following description and close examination accompanying drawing, will understand better the present invention.Provide these accompanying drawings in illustrational mode, but these accompanying drawings and not limiting the present invention in any way.Accompanying drawing is as follows:
Fig. 1 has provided the view of the system under implementation pattern of the present invention;
Fig. 2 has provided the view of the VoD unit that comprises playlist.
Specific embodiment
In one embodiment, video on-demand system needs some participants' participation, wherein has:
The supplier of-audio-visual content,
-technical operator, its according to audio-visual content prepare with these audio-visual contents in each metadata that is associated, and according to each content and the metadata making one VoD unit that is associated, encoded in one group of VoD unit, and prepare the stream that comprises these VoD unit to be distributed
-broadcast operator, it is responsible for the user owner of this streaming to decoder.
With reference to Fig. 1, it expresses the system 1 of propelling movement type video request program simplifiedly, wherein, server 2 is set to for the element that creates video request program, and be used for via radio network 3, these elements being broadcast to the user of decoder 4 according to the form of the stream that comprises the VoD broadcast files, wherein as the case may be, described stream can also comprise current TV broadcast program except the VoD broadcast files.
Radio network 3 can be for example to be used for the network of broadcasting MPEG or DVB type Digital Television.Under existing conditions, radio network 3 is the networks for digital video broadcasting.
Each in decoder 4 comprises hard disk drive 5, microprocessor 6 and the smart card 7 for the data storage.These decoders 4 designed to be used and receive stream, extract the VoD unit from the VoD broadcast files, these VoD unit is stored on hard disk drive 5, and then processes these VoD unit so that information and/or these content itself relevant with the audio/video content that exists in these VoD unit can manifest on display screen.
Display screen is the TV screen that for example is connected to decoder 4.Metadata is not in the situation that during decoding is stored in database on hard disk drive 5, and is corresponding with the identifier of VoD unit under this metadata.In some cases, the content of the audio frequency that exists in the VoD unit, video or image type is stored on hard disk drive with the form of encrypting, and only have when it is bought by the user of decoder 4 just can be played or to show, that is, decryptedly then reduce on screen.
Should be noted in the discussion above that some audio frequency, video or the picture material that exist in the VoD unit are not in encrypted form, and can be by user's free access, for example, with trailer, film poster, commercial advertisement image or audio/video ... relevant content.
Can buy in a different manner, for example, by ordering and/or online and/or off-line trading.
In case completed purchase, decoder 4 is stored on smart card 7 with regard to acceptance certificate and with it, and this allows to activate the deciphering of being undertaken by decoder.
Menu can appear on display screen, menu can be such as organizing into groups by theme (film, documentary film, children, physical culture etc.), thereby the content that can be bought by the user is provided and need not the user and select the zone of namely automatically playing the audio/video content and/or automatically showing image (for example, trailer, commercial advertisement, film poster ...).
In addition, decoder 4 is suitable for (in decoder authentication-access authority, after namely being included in the certificate corresponding with the user of checking on smart card 7) and then plays/show exist or content that quote in the selection made with the user corresponding VoD unit on screen in menu.
The download service of propelling movement type VoD content can be permanent activation or activate between the predetermined time window phase, perhaps also can activate according to current available bandwidth on radio network 3.In one embodiment, decoder is dynamically informed radio slot by means of the order that receives by network 3, and is adjusted to the reception of only monitoring the VoD unit in these periods.
The download file of a VoD unit that comprises audio/video is very large, normally several GB.The normally millions of bytes of download file of a VoD unit that only comprises metadata.
In described embodiment of the present invention, do not comprise the element that VoD unit the VoD unit of image or audio/video or playlist comprises contents such as film, documentary film of direct or indirect definition except only comprising metadata.In one embodiment, this VoD unit has " atom " attribute, that is, if this VoD unit is not intactly stored or be not stored based on the parametrization quality threshold of determining on hard disk drive, it is regarded as unavailable in menu and its content can not be played.
The VoD unit is defined uniquely by VoD element identifier (element ID) (for example, the numeral of 32 bits of encoded).
VoD unit and identifier thereof comprise:
-the dynamic content that can play/show, it comprises:
Zero audio/video sequence, perhaps
Zero comprises the playlist of identifier list of the sequence of other VoD unit;
-the static content that can show at least in part, it comprises:
01 images or one group of image, and/or
01 group metadata.
In one embodiment, dynamic content comprises one and only an audio/video sequence or a playlist, but does not comprise simultaneously these two, and making can be not ambiguous for the order of playing VoD.
An audio/video sequence comprises track and the captions of a track of video and/or some.
The VoD unit can not comprise dynamic content, but only comprises the static content of the image of image with background type or commercial advertisement, and this static content can be for example with the background image that acts on display menu on screen.
The VoD unit can neither comprise dynamic content and also not comprise image.
The VoD unit must comprise a group metadata.In the metadata of VoD unit, the element of unique necessity is the identifier of VoD unit.In one embodiment, the identifier of VoD unit can not be revised.
Some metadata in metadata have information attribute, and it will be displayed on screen.Other metadata has technique influence to the life-span of VoD unit.
Metadata can be divided into several kinds and subcategory, and can comprise:
-the edit file relevant with content: title, description, participant, producer, making date, chapters and sections ...
-classified information, for example, the function of local law: head of a family's control, minimal ages, classifying content ...
-commercial advertisement information: the purchasing price of VoD unit, to the commercial advertisement link of (batches) (the VOD element is its part) in batches ...
-technical information:
(depend on indicated characteristic, decoder will make the VoD unit clear and definite visible and can select in the menu of the decoder for preparing for or do not prepare for the user for zero " as seen " or " hiding " characteristic; The VoD unit that " hides " is the object of quoting, and therefore it can not directly be selected by the user: simple image, banner etc.);
Zero duration, the audio/video form of playing;
The zero firework control date (this decoder will based on this date this VoD of firework control unit when determining);
The sign of zero content provider;
Zero Settlement Date to decoder broadcasting VoD unit, the minimum quality of accepting of download.
-to the quoting of other VoD unit (when for example, in current VoD unit being the preview of one or more other VoD unit).
-access control: the sign of required subscription type can be perhaps the essential indication of buying separately as the case may be; Extra technology access standard.
-use and control:
Zero goes through buys or selects the time window (decoder 4 only is set to during this time window approval and buys or select this unit) of VoD unit;
The maximum times that zero make maximum duration that the VoD unit can be used for reproducing, goes through to reproduce (be exceeded if decoder 4 is set to these max-thresholds, stop in the zone of menu and/or screen these unit are provided);
Zero deadline (be exceeded if decoder 4 is set to the deadline, stop in the zone of menu and/or screen these unit are provided).
In one embodiment, (for example be used for " as seen " VoD unit of audio/video type, it comprises audio/video sequence (film) and image (for example, film poster)) decoder 4 be set in menu to show editor and classified information and image.The user had selected this VoD unit from this display after, decoder was processed the audio/video content of VoD unit according to access control checking etc., so that it is reset on screen.
In one embodiment, the metadata of VoD unit adopts the form of XML file, wherein, every kind of dissimilar information by between different VoD unit each other similar respective identifier identify (for example, maximum duration value will provide based on the field identification label) in all VoD unit.
As above indicated, the VoD unit can comprise the VoD unit playlist that comes from one or the other VoD unit, and does not carry the audio/video content.Play this list reproduction pattern VoD unit and mean, play the content by each entry sign in this list.Entry in list comprises the identifier of another VoD unit and the explanation of the content that will reproduce/show in another unit.This has consisted of the mechanism that is used for creating dynamic commercial advertisement banner, announcement banner etc. on screen.
When playlist was quoted the image of another VoD unit, playlist is the duration of this image of indicated number also.
For example, playlist is defined as foloows:
-image " commercial advertisement " of VoD unit 101 is shown 5 seconds;
-image " commercial advertisement " of VoD unit 102 is shown 3 seconds;
The dynamic content (in fact the duration herein depends on content) of-demonstration VoD unit 103.
Recovery period in this VoD unit, decoder 4 are set to according to the characteristic of this VoD unit of VoD unit indicating, the image " commercial advertisement " of VoD unit 101 be shown 5 seconds; The image " commercial advertisement " of VoD unit 102 is shown 3 seconds; And the image " commercial advertisement " (seeing below) that sequentially shows VoD unit 103 with this order or another.
When list type VoD unit was sent to decoder 4 and is stored in decoder 4, at least one VoD unit in the VoD unit of quoting in this list may also not be broadcasted.
In this way, can quote identical VoD unit in several playlists.
In addition, the metadata of played column phenotype VoD unit can also comprise respectively following characteristic, and these characteristics are indicated in the field of distributing for these characteristics in the XML file:
-" circulation " (for example, on duty 1 when being endowed the field corresponding with label " circulation "): in this case, when last VoD unit of this list played/when showing, decoder 4 from first module begin to restart to reproduce (otherwise, if characteristic " circulation " is not selected, that is, on duty 0 when being endowed the field corresponding with label " circulation ", stops reproducing).
-" random sequence ": before stopping broadcast, decoder 4 reads once with the content of random sequence with each VoD unit, but not come the content (perhaps with: if the Indication Characteristics circulation is reaffirmed it) of each VoD unit in the played in order playlist with the order in list.
In addition, in played column phenotype VoD unit, the characteristic below can indicating or not indicate for each entry in list (for example code by determining at the specific fields indicating):
-speical play pattern namely, allows/forbids the broadcast different from the normal speed forward of video content (fast-forward play, to skip etc.; Be " trick-mode (special-effect mode) " in English): for example, in the situation that playlist comprises film and two entries relevant with the video of commercial advertisement type, can indicate for the video of commercial advertisement type, normal play mode can not be revised, and for film, normal play mode is revisable.Therefore, decoder 4 is only considered the user's of decoder 4 order when movie, and does not consider the user's of decoder 4 order during the video of playing the commercial advertisement type.
-listed VoD unit can be indicated as pressure project or selectable items.Therefore, when played column phenotype VoD unit is distributed and stores in decoder, since that comprise in this list and be indicated as compulsory VoD unit and be not stored in decoder, so decoder 4 thinks that playlist is disabled.On the other hand, if only be indicated as optional VoD unit loss, decoder 4 can come playlist by the unit of ignoring loss.Therefore, comprise be indicated as compulsory film to another VoD unit quote and be indicated as optionally the playlist of quoting to the commercial advertisement sequence of another VoD unit, also be not downloaded to decoder if comprise the VoD unit of commercial advertisement sequence, the user can visit this playlist by menu.
If-one entry is lost, skip another entry.For example, in trailer type playlist, at least one entry is movie trailer, and other entry is commercial advertisement.Therefore, if trailer is lost, can not distribute the entry of commercial advertisement.
If-there is an entry, skip another entry.
If-one VoD unit is play and/or bought by the user, skip another entry.In trailer type playlist, play by the user if comprise the VoD unit of the corresponding film of a trailer in trailer with the list indicating, needn't play this trailer.
If-one VoD unit is not also play and/or bought by the user, skip another entry.
If-one VoD unit does not have dynamic video content, skip another entry.
If-one VoD unit has dynamic video content, skip another entry.
-only have the geographic code in (decoder may be for example smart card 7 knows by reading) user's zone to be in just to play this entry in predefined code listing.
If the geographic code in-user's zone is in predefined code listing, do not play this entry.
-when user after having play a certain entry of playlist presses a certain button on decoder (for example be used for download button) or selects particular command on screen, to another VoD unit executable operations.For example, when the playlist that comprises the entry corresponding with the VoD unit of trailer and commercial advertisement had been play, the user can be simply by selecting specific button (via the VoD unit that comprises corresponding contents) to select to transmit film during the trailer of this film of broadcasting.Can come to trigger different operations based on the same item of list by selecting two different predetermined button.Therefore, in playlist, to the entry of determining, determine following content:
-with the corresponding field of operation in, which operation is to carry out (play VoD unit, purchase),
-at the field indicating corresponding with the sign of VoD unit this operation must put on which VoD unit (being specified by its identifier), and
-in the field corresponding with button, if what does not all have indication, this means that any button can carry out this operation; If specified specific button, only just carry out this operation when pressing this specific button.
These playlists allow to define in mode flexible and that develop the interactive and service of VoD, and needn't revise the software of decoder.
VoD unit stream under push mode can comprise the VoD unit with dynamic content and/or the VoD unit that only contains image and/or metadata.Rear a kind of VoD unit can be so-called renewal VoD, the purpose of distributing this VoD unit is to upgrade some or all metadata (it also comprises other metadata except comprising the metadata relevant with access control) and/or the image of other VoD unit that is broadcasted and is stored in decoder.This VoD unit is known as for the sequence of upgrading other VoD unit.
Renewal sequence comprises and does not contain the audio/video content and only contain the VoD unit that is attended by or is not attended by for the metadata of the image of decoder 4 and/or order.
These orders comprise the order that for example is used for carrying out following operation:
The VoD unit of the some that-firework control distributes by the mode of its identifier;
-firework control is than older VoD unit of designated date in order;
-in the specific context such as menu, the elementary audio track being set, the identifier of the VoD unit comprise audio track is specified in order thus, and specifies the identifier of context (for example context of respective menu).If also do not specify menu, audio track will be retained as and show by decoder 4 background music of playing during all menus;
-in the specific context such as menu, background image being set, the identifier of the VoD unit that comprises this image is specified in this order thus, and specifies the identifier of context (for example context of respective menu).If also do not specify menu, image will be retained as and show by decoder 4 background image of playing during all menus;
-current playlist is set in specific context, the identifier of the VoD unit that comprises this playlist is specified in this order thus, and specify contextual identifier, for example, be the bar on screen that trailer or advertisement reserve, itself and part next-door neighbour of the screen that provides the menu of optional content to reserve for demonstration.
For example, if by the lower mounted mass of decoder assessment lower than the threshold value at the minimum lower mounted mass of the metadata indicating of VoD unit, decoder thinks that this VoD unit is disabled.
In one embodiment, the broadcast files of VoD unit can be sent and be received repeatedly by decoder 4.Decoder 4 is set to the content of reconstruct VoD unit from the repeatedly broadcasting of VoD unit, and this is useful when having error of transmission in the zones of different of each broadcasting.
In one embodiment, the metadata of VoD unit is sent out repeatedly with the form of the sequence that is used for update metadata, the risk of makeing mistakes with the metadata of restriction VoD unit.
In one embodiment, for example, decoder 4 is set to firework control date that firework control provides strictly lower than all VoD unit of current date in metadata.
The VoD unit can be by free access in menu, perhaps only can be by the decoder user access of having ordered specific subscription certificate and/or addressable owing to having bought unit self.These patterns by operator's definition have been specified in metadata (" access control " part).
Registered the sign to the order of being undertaken by the user in the smart card 7 of decoder 4.Similarly, when the user bought the VoD unit, registration for example identified the respective certificate of the session number form of VoD unit in smart card 7.Therefore, select from shown menu as the user can not free access the VoD unit time, pattern and smart card canned data that decoder will define in metadata is used for access VoD unit compare, and only have existence at once just playing/show selected content.In one embodiment, the audio/video content of the VoD unit that sends by radio network is stored in decoder 4 with the form of encrypting, and is decoded by decoder 4 under the help of at least one key of only just storing in smart card when having coupling.
In one embodiment, can not receive the sequence that is used for update metadata by decoder and upgrade the metadata relevant with access control.Therefore, in case encrypted audio/video content is sent to decoder, just can not revise again the standard for accessed content.For this reason, must come according to new access criteria the re-encrypted content, and will send to all decoders as new VoD unit through the content of re-encrypted.
The establishment of VoD unit has been described with reference to Fig. 2.
Create video unit 21 " film 1 content ".It comprises the audio/video content 23 of the film of metadata 22 and " film 1 " by name.
These metadata comprise different necessary informations, and described necessary information comprises the information that unique identifier and definition video unit " are hidden " from the menu of decoder.
Create VoD unit 15 " commercial advertisements 1 ".It comprises the audio/video content 17 of video of commercial advertisement and the metadata 16 that contains different necessary informations, and described necessary information comprises the information that unique identifier and definition video unit 15 " are hidden " from the menu of decoder.
Create VoD unit 18 " commercial advertisements 2 ".It comprises the audio/video content 20 of video of commercial advertisement and the metadata 19 that contains different necessary informations, and described necessary information comprises the information that unique identifier and definition video unit 18 " are hidden " from the menu of decoder.
Establishment VoD unit 10 " films 1 ".The metadata 11 that it comprises playlist 14 and contains different necessary informations, described necessary information comprise unique identifier and definition video unit 10 information of " as seen " and the edit file on film 1 in the menu of decoder.
Playlist 14 comprises three entries.
First entry comprises the identifier of VoD unit 15 " commercial advertisements 1 ", explanation, " special-effect mode is forbidden " characteristic and " project is optional " characteristic of the element (video 17) that will play in this VoD unit.
Second entry comprises the identifier of VoD unit 18 " commercial advertisements 2 ", explanation, " special-effect mode is forbidden " characteristic and " project is optional " characteristic of the element (video 20) that will play herein.
The 3rd entry comprises the identifier of VoD unit 21 " film 1 contents ", explanation, " special-effect mode approval " characteristic and " project pressure " characteristic of the element (video 23) that will play herein.
Therefore, offered by decoder 4 user by the menu of visual and the content selected in, it is visible only having VoD unit 10, and VoD unit 15,18 and 21 is sightless.
Even VoD unit 15 and/or 18 is unavailable, as long as VoD unit 21 can use, VoD unit 10 will be become by decoder visual.
Availablely namely mean, VoD is stored by decoder to be considered to gratifying load mass the unit.
If the user is provided for from the menu of display unit 10 selecting the order of certain the edit file section in this unit and display case such as edit file section to decoder, decoder is with display video 17, then display video 20, display video 23 then.
Decoder will can not be ratified to skip or quick displaying video 17 and 20, but decoder is skipped approval or quick displaying video 23.
In one embodiment, in the menu that is provided according to the VoD unit that receives by decoder, the program of trailer occurs.
We publicize two trailer BA1 and BA2 at hypothesis in this program in the first week, and at second week publicity trailer BA2 and another trailer BA3.
Before the first week, broadcasted to decoder 4: comprise the audio/video content of the film corresponding with trailer BA1 " film 1 " VoD unit " film 1 ", comprise VoD unit " BA1 ", the VoD unit " film 2 " of audio/video content that comprises the film corresponding with trailer BA2 " film 2 " and the VoD unit " BA2 " of audio/video content that comprises the trailer of film " film 2 " of audio/video content of the trailer of film " film 1 ".
Also broadcasted VoD unit " program of trailer 1 ".
VoD unit " program of trailer 1 " is included in the playlist that has " circulation " characteristic on the entry i that defines as follows in list, wherein, and i=1 to 2:
The identifier of-VoD unit: BAi,
-the element that play: the audio/video content of the trailer of film " film i ",
-" special-effect mode is forbidden ",
-just play when only available in VoD unit " film i ",
-just play when only not selected by the user and/or buying in VoD unit " film i ".
When the first week began, via network 3, order is sent to decoder, thereby order these decoders that the trailer program corresponding with VoD unit " program of trailer 1 " is provided in its menu.
Between the period 1, also broadcast VoD unit " program of trailer 2 ", and comprise the VoD unit " film 3 " of audio/video content of the film corresponding with trailer BA3 " film 3 " and the VoD unit " BA3 " of audio/video content that comprises the trailer of film " film 3 ".
Also broadcasted VoD unit " program of trailer 2 ".
VoD unit " program of trailer 2 " is included in the playlist that has " circulation " characteristic on the entry i that defines as follows in list, wherein, and i=2 to 3:
The identifier of-VoD unit: BAi,
-the element that play: the audio/video content of the trailer of film " film i ",
-" special-effect mode is forbidden ",
-just play when only available in VoD unit " film i ",
-just play when only being selected in VoD unit " film i " and/or buying.
In another embodiment, by replacing trailer with image, can be that film creates publicity program under the help of a played column phenotype VoD unit of quoting the VoD unit that comprises film image.
Claims (22)
1. the transmission method of a propelling movement type video frequency request program comprises the following steps:
By radio network, the broadcasting stream of propelling movement type video frequency request program unit is sent to a plurality of decoders that can be connected to display screen from remote server, wherein, each program cells comprises the first corresponding element data field that contains element identifier (element ID) at least, and each program cells comprises the second field with audio/video content alternatively
Described program cells is stored in the memory of each decoder;
Wherein, described stream comprises the first program cells, second program unit and the 3rd program cells, described the first program cells comprises first module identifier and the first audio/video content, described second program unit comprises second unit identifier and the second audio/video content, described the 3rd program cells comprises the 3rd element identifier (element ID), and described the 3rd program cells also comprises the list that contains at least described first module identifier and described second unit identifier in addition
Wherein, when described decoder receives when playing the order of described the 3rd program cells, the data that exist in first field of described decoder according to the metadata of described the 3rd program cells show continuously the second included audio/video content in the first audio/video content that described the first program cells is included and described second program unit on screen.
2. transmission method according to claim 1, wherein, the first field of the metadata of described the 3rd program cells provides at least one parameter value, described at least one parameter value indication:
The described continuous broadcast of described the first audio/video content and described the second audio/video content is playback cycle or single playback; And/or
Whether the order of playing is random.
3. transmission method according to claim 1, wherein, in the described list of described the 3rd program cells, at least one respective code is associated with described first module identifier, and/or a respective code is associated with described second unit identifier, wherein, each code indication in described code:
A/ whether ratify that playback skip is crossed or accelerated playback between specific playback mode; And/or
Pressure or the optional attribute of the described unit that b/ is associated with described code; And/or
The specified conditions of skipping and will verifying of the unit that c/ is associated with described code;
The element identifier (element ID) of the operation that d/ will carry out, the program cells different with described Unit the 3rd from described first module, described second unit, and alternatively, the sign of order;
Wherein, when the code indication situation a/ that is associated with a unit in described first module and described second unit, described decoder when playing the audio/video content of this unit according to the value approval of described code or forbid that playback skip is crossed or accelerated playback; And/or
Wherein, when the code indication situation b/ that is associated with a unit in described first module and described second unit, approval or forbid playing another audio/video content in described the first audio/video content and described the second audio/video content when the audio/video content of described decoder in described the first audio/video content and described the second audio/video content is unavailable; And/or
Wherein, when the code indication situation c/ that is associated with unit in described first module and described second unit, described decoder test is determined condition and skip described broadcast when described condition is verified; And/or
Wherein, when the code indication situation d/ that is associated with a unit in described first module and described second unit, described decoder is carried out the operation relevant with another program cells that identifies alternatively under the condition that receives the order that identifies.
4. transmission method according to claim 3, wherein, when with code indication situation c/ that a unit in described first module and described second unit is associated, described definite condition is based on:
The availability of another unit in described first module and described second unit; And/or
The selection that described user has made the program cells different with described Unit the 3rd from described first module, described second unit; And/or
The audio/video content of the program cells different with described Unit the 3rd from described first module, described second unit; And/or
The comparison of the code in the geographical position of predetermined geographic area list and the described decoder of sign.
5. transmission method according to claim 1, wherein, described the first program cells comprises still image, the described list of described Unit the 3rd comprises the duration value corresponding with the identifier of described first module, and wherein, described decoder is arranged in use in the described image of playing during described the 3rd program cells described first module and shows the duration that equates with described value.
6. the described transmission method of any one according to claim 3 to 4, wherein, described operation comprises plays or described another program cells that firework control identifies.
7. transmission method according to claim 1, wherein, described stream comprises the 4th program cells, the identifier of the program cells that described the 4th program cells indication is different from described the 4th program cells; And
Wherein, described decoder uses included metadata in described the 4th program cells to replace metadata in the first field of the different program cells of described and described the 4th program cells owing to receiving described the 4th program cells.
8. transmission method according to claim 1, wherein, described stream comprises the firework control order of the identifier of indicating program cells, wherein, the described decoder unit that firework control identifies when receiving described order; And/or
Wherein, described stream comprises the firework control order that the date is determined in indication, and the program cells on the date before described decoder firework control described definite date of indication of storing.
9. transmission method according to claim 1, wherein, the first field of the metadata of described program cells comprises the son field of indication " as seen " or " hiding " characteristic; And described decoder only for the unit of the son field that comprises indication " as seen " characteristic, shows the information from the first son field in program guide.
10. transmission method according to claim 9, wherein, selected that the information relevant with program cells presents on described screen regional the time, described decoder shows audio/video content included in described program cells on described screen.
11. transmission method according to claim 1, wherein, the first field of the metadata of described program cells comprises the son field of indicating the firework control date; And described decoder comes the described program cells of firework control according to the corresponding data at described son field indicating.
12. decoder, be set to receive the propelling movement type video frequency request program and can be connected to display screen, described decoder comprises memory and is used for receiving from radio network the module of the stream that comprises " propelling movement " formula video frequency request program unit, wherein, each program cells comprises the first corresponding field of the metadata that contains element identifier (element ID) at least, and each program cells comprises the second field that contains the audio/video content alternatively, wherein, described decoder is suitable for storing described program cells, described decoder is suitable for receiving when playing the order of the 3rd program cells, the data that exist in the first field according to the metadata of described the 3rd program cells, order continuous demonstration on described screen comprises the first program cells, the stream of second program unit and the 3rd program cells, wherein, described the first program cells comprises first module identifier and the first audio/video content, described second program unit comprises second unit identifier and the second audio/video content, described the 3rd program cells comprises the 3rd element identifier (element ID), and described the 3rd program cells also comprises a list in addition, described list comprises the second included audio/video content second unit identifier in the first module identifier of the first audio/video content included in described the first program cells and described second program unit at least.
13. decoder according to claim 12, it is suitable for carrying out following operation according to the parameter value in the first field of the metadata of described the 3rd program cells:
Circularly or only single ground is play described the first audio/video content and described the second audio/video content continuously; And/or
Use the order of playing randomly or nonrandomly described the first audio/video content and described the second audio/video content.
14. according to claim 12 or 13 described decoders, its be suitable for determining in described list in described the 3rd program cells the corresponding code that is associated with described first module identifier and/or with at least one corresponding code that described second unit identifier is associated at least one value
Described decoder is suitable for:
According to the value of determined code, ratify or forbid that playback skip is crossed or accelerated playback during the audio/video content of playing described unit; And/or
Value according to determined code, when an audio/video content in described the first audio/video content and described the second audio/video content is unavailable, ratifies or forbid playing another audio/video content in described the first audio/video content and described the second audio/video content; And/or
According to the function of the value of determined code, condition is determined in test, and skips the broadcast to described unit when described condition has been verified; And/or
According to the function of the value of described definite code, alternatively under the condition that receives by the order of described value sign, to another program cells executable operations by described value sign.
15. decoder according to claim 14, wherein, described definite condition is pointed to:
The availability of described another unit in described first module and described second unit; And/or
The selection that described user has made the program cells different with described Unit the 3rd from described first module, described second unit; And/or
The audio/video content of the program cells different with described Unit the 3rd from described first module, described second unit; And/or
The comparison of the code in the geographical position of predetermined geographic area list and the described decoder of sign.
16. decoder according to claim 12, it is suitable in the situation that described the first program cells comprises that still image determines the duration value corresponding with the described identifier of described first module in the described list of described Unit the 3rd, and the duration that during playing described the 3rd program cells, the described image demonstration of described first module is equated with determined value.
17. decoder according to claim 14, wherein, described operation comprises described another program cells that broadcast or firework control identify.
18. decoder according to claim 12, it is suitable for after described the 4th program cells of the identifier that receives program cells in being included in described stream, that indication is different from the 4th program cells, replaces the metadata in the first field of the different program cells of described and described the 4th program cells with included metadata in described the 4th program cells.
19. decoder according to claim 12, when it is suitable for receiving the firework control order of indication program cells identifier in described stream, the unit that firework control identifies; And/or when being suitable for receiving indication determining the firework control order on date in described stream, the program cells on the date before described definite date of the indication that firework control is stored.
20. the described decoder of any one according to claim 12, it is suitable in the situation that the first field of the metadata of described program cells comprises the son field of indication " as seen " or " hiding " characteristic, only after verifying that a unit comprises the son field of indication " as seen " characteristic, just provide at program the information that shows in menu from the first son field of this unit.
21. decoder according to claim 20, it is suitable for identifying the information relevant with program cells after the selection in the zone that presents on described screen, shows included audio/video content in described program cells on described screen.
22. decoder according to claim 12, it is suitable for use in determining firework control date of son field indicating of the first field of the metadata of a program cells, and according to determined at least one program cells of date firework control.
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| FR1160759A FR2983380A1 (en) | 2011-11-24 | 2011-11-24 | METHOD FOR TRANSMITTING VIDEO PROGRAMS ON THE "PUSH" TYPE REQUEST AND DECODER |
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| EP (1) | EP2597886A1 (en) |
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| CN111526430A (en) * | 2020-03-26 | 2020-08-11 | 王东 | File matching method and device and electronic equipment |
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| CN102802052A (en) * | 2012-08-16 | 2012-11-28 | 中兴通讯股份有限公司 | Video on demand program method and device |
| US11303964B2 (en) * | 2017-02-13 | 2022-04-12 | DISH Technologies L.L.C. | Apparatus, systems and methods for media content event quick access queue |
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| US20020170068A1 (en) * | 2001-03-19 | 2002-11-14 | Rafey Richter A. | Virtual and condensed television programs |
| US20050005308A1 (en) * | 2002-01-29 | 2005-01-06 | Gotuit Video, Inc. | Methods and apparatus for recording and replaying sports broadcasts |
| US7950033B2 (en) * | 2001-10-10 | 2011-05-24 | Opentv, Inc. | Utilization of relational metadata in a television system |
| JP3966503B2 (en) * | 2002-05-30 | 2007-08-29 | インターナショナル・ビジネス・マシーンズ・コーポレーション | Content reproduction control device, data management device, storage-type content distribution system, content distribution method, control data transmission server, program |
| US20050210501A1 (en) * | 2004-03-19 | 2005-09-22 | Microsoft Corporation | Method and apparatus for handling metadata |
| US7313755B2 (en) * | 2005-04-20 | 2007-12-25 | Microsoft Corporation | Media timeline sorting |
| US20090187593A1 (en) * | 2008-01-17 | 2009-07-23 | Qualcomm Incorporated | Methods and Apparatus for Targeted Media Content Delivery and Acquisition in a Wireless Communication Network |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111526430A (en) * | 2020-03-26 | 2020-08-11 | 王东 | File matching method and device and electronic equipment |
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| EP2597886A1 (en) | 2013-05-29 |
| FR2983380A1 (en) | 2013-05-31 |
| US20130139206A1 (en) | 2013-05-30 |
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| JP2013115815A (en) | 2013-06-10 |
| AU2012200859A1 (en) | 2013-06-13 |
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Application publication date: 20130605 |